WHAT: These handy, comic-book-style pothole warnings were spray-painted on west-end streets by the Urban Repair Squad, a group of pro-bicycle street-art vigilantes, whose work we’ve seen many times before. The idea here is to alert cyclists to dangerous road conditions, while also, presumably, letting City Hall know that its pothole crews have missed a few spots. The URS did this exact same thing in 2010.

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